Decomposition of litter produced under elevated CO2

Dependence on plant species and nutrient supply

Valerie M. Franck, Bruce A Hungate, F. Stuart Chapin, Christopher B. Field

Research output: Contribution to journalArticle

63 Citations (Scopus)

Abstract

We investigated the effect of CO2 concentration and soil nutrient availability during growth on the subsequent decomposition and nitrogen (N) release from litter of four annual grasses that differ in resource requirements and native habitat. Vulpia microstachys is a native grass found on California serpentine soils, whereas Avena fatua, Bromus hordaceus, and Lolium multiflorum are introduced grasses restricted to more fertile sandstone soils (Hobbs and Mooney 1991). Growth in elevated CO2 altered litter C:N ratio, decomposition, and N release, but the direction and magnitude of the changes differed among plant species and nutrient treatments. Elevated CO2 had relatively modest effects on C:N ratio of litter, increasing this ratio in Lolium roots (rind shoots at high nutrients), but decreasing C:N ratio in Arena shoots. Growth of plants under elevated CO2 decreased the decomposition rate of Vulpia litter, but increased decomposition of Arena litter from the high-nutrient treatment. The impact of elevated CO2 on N loss from litter also differed among species, with Vulpia litter from high-CO2 plants releasing N more slowly than ambient-CO2 litter, whereas growth under elevated CO2 caused increased N loss from Avena litter. CO2 effects on N release in Lolium and Bromus depended on the nutrient regime in which plants were grown. There was no overall relationship between litter C:N ratio and decomposition rate or N release across species and treatments. Based on our study and the literature, we conclude that the effects of elevated CO2 on decomposition and N release from litter are highly species-specific. These results do not support the hypothesis that CO2 effects on litter quality consistently lead to decreased nutrient availability in nutrient-limited ecosystems exposed to elevated CO2.

Original languageEnglish (US)
Pages (from-to)223-237
Number of pages15
JournalBiogeochemistry
Volume36
Issue number3
DOIs
StatePublished - 1997
Externally publishedYes

Fingerprint

Nutrients
litter
decomposition
Decomposition
nutrient
Soils
Availability
grass
nutrient availability
plant species
Sandstone
Ecosystems
shoot
Nitrogen
soil nutrient
soil
effect
sandstone
ecosystem
nitrogen

Keywords

  • decomposition
  • elevated CO
  • litter quality
  • nitrogen mineralization
  • serpentine grassland

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Environmental Science(all)

Cite this

Decomposition of litter produced under elevated CO2 : Dependence on plant species and nutrient supply. / Franck, Valerie M.; Hungate, Bruce A; Chapin, F. Stuart; Field, Christopher B.

In: Biogeochemistry, Vol. 36, No. 3, 1997, p. 223-237.

Research output: Contribution to journalArticle

Franck, Valerie M. ; Hungate, Bruce A ; Chapin, F. Stuart ; Field, Christopher B. / Decomposition of litter produced under elevated CO2 : Dependence on plant species and nutrient supply. In: Biogeochemistry. 1997 ; Vol. 36, No. 3. pp. 223-237.
@article{4e25f65b0334453ab9ed99235ee5ff22,
title = "Decomposition of litter produced under elevated CO2: Dependence on plant species and nutrient supply",
abstract = "We investigated the effect of CO2 concentration and soil nutrient availability during growth on the subsequent decomposition and nitrogen (N) release from litter of four annual grasses that differ in resource requirements and native habitat. Vulpia microstachys is a native grass found on California serpentine soils, whereas Avena fatua, Bromus hordaceus, and Lolium multiflorum are introduced grasses restricted to more fertile sandstone soils (Hobbs and Mooney 1991). Growth in elevated CO2 altered litter C:N ratio, decomposition, and N release, but the direction and magnitude of the changes differed among plant species and nutrient treatments. Elevated CO2 had relatively modest effects on C:N ratio of litter, increasing this ratio in Lolium roots (rind shoots at high nutrients), but decreasing C:N ratio in Arena shoots. Growth of plants under elevated CO2 decreased the decomposition rate of Vulpia litter, but increased decomposition of Arena litter from the high-nutrient treatment. The impact of elevated CO2 on N loss from litter also differed among species, with Vulpia litter from high-CO2 plants releasing N more slowly than ambient-CO2 litter, whereas growth under elevated CO2 caused increased N loss from Avena litter. CO2 effects on N release in Lolium and Bromus depended on the nutrient regime in which plants were grown. There was no overall relationship between litter C:N ratio and decomposition rate or N release across species and treatments. Based on our study and the literature, we conclude that the effects of elevated CO2 on decomposition and N release from litter are highly species-specific. These results do not support the hypothesis that CO2 effects on litter quality consistently lead to decreased nutrient availability in nutrient-limited ecosystems exposed to elevated CO2.",
keywords = "decomposition, elevated CO, litter quality, nitrogen mineralization, serpentine grassland",
author = "Franck, {Valerie M.} and Hungate, {Bruce A} and Chapin, {F. Stuart} and Field, {Christopher B.}",
year = "1997",
doi = "10.1023/A:1005705300959",
language = "English (US)",
volume = "36",
pages = "223--237",
journal = "Biogeochemistry",
issn = "0168-2563",
publisher = "Springer Netherlands",
number = "3",

}

TY - JOUR

T1 - Decomposition of litter produced under elevated CO2

T2 - Dependence on plant species and nutrient supply

AU - Franck, Valerie M.

AU - Hungate, Bruce A

AU - Chapin, F. Stuart

AU - Field, Christopher B.

PY - 1997

Y1 - 1997

N2 - We investigated the effect of CO2 concentration and soil nutrient availability during growth on the subsequent decomposition and nitrogen (N) release from litter of four annual grasses that differ in resource requirements and native habitat. Vulpia microstachys is a native grass found on California serpentine soils, whereas Avena fatua, Bromus hordaceus, and Lolium multiflorum are introduced grasses restricted to more fertile sandstone soils (Hobbs and Mooney 1991). Growth in elevated CO2 altered litter C:N ratio, decomposition, and N release, but the direction and magnitude of the changes differed among plant species and nutrient treatments. Elevated CO2 had relatively modest effects on C:N ratio of litter, increasing this ratio in Lolium roots (rind shoots at high nutrients), but decreasing C:N ratio in Arena shoots. Growth of plants under elevated CO2 decreased the decomposition rate of Vulpia litter, but increased decomposition of Arena litter from the high-nutrient treatment. The impact of elevated CO2 on N loss from litter also differed among species, with Vulpia litter from high-CO2 plants releasing N more slowly than ambient-CO2 litter, whereas growth under elevated CO2 caused increased N loss from Avena litter. CO2 effects on N release in Lolium and Bromus depended on the nutrient regime in which plants were grown. There was no overall relationship between litter C:N ratio and decomposition rate or N release across species and treatments. Based on our study and the literature, we conclude that the effects of elevated CO2 on decomposition and N release from litter are highly species-specific. These results do not support the hypothesis that CO2 effects on litter quality consistently lead to decreased nutrient availability in nutrient-limited ecosystems exposed to elevated CO2.

AB - We investigated the effect of CO2 concentration and soil nutrient availability during growth on the subsequent decomposition and nitrogen (N) release from litter of four annual grasses that differ in resource requirements and native habitat. Vulpia microstachys is a native grass found on California serpentine soils, whereas Avena fatua, Bromus hordaceus, and Lolium multiflorum are introduced grasses restricted to more fertile sandstone soils (Hobbs and Mooney 1991). Growth in elevated CO2 altered litter C:N ratio, decomposition, and N release, but the direction and magnitude of the changes differed among plant species and nutrient treatments. Elevated CO2 had relatively modest effects on C:N ratio of litter, increasing this ratio in Lolium roots (rind shoots at high nutrients), but decreasing C:N ratio in Arena shoots. Growth of plants under elevated CO2 decreased the decomposition rate of Vulpia litter, but increased decomposition of Arena litter from the high-nutrient treatment. The impact of elevated CO2 on N loss from litter also differed among species, with Vulpia litter from high-CO2 plants releasing N more slowly than ambient-CO2 litter, whereas growth under elevated CO2 caused increased N loss from Avena litter. CO2 effects on N release in Lolium and Bromus depended on the nutrient regime in which plants were grown. There was no overall relationship between litter C:N ratio and decomposition rate or N release across species and treatments. Based on our study and the literature, we conclude that the effects of elevated CO2 on decomposition and N release from litter are highly species-specific. These results do not support the hypothesis that CO2 effects on litter quality consistently lead to decreased nutrient availability in nutrient-limited ecosystems exposed to elevated CO2.

KW - decomposition

KW - elevated CO

KW - litter quality

KW - nitrogen mineralization

KW - serpentine grassland

UR - http://www.scopus.com/inward/record.url?scp=0030613143&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030613143&partnerID=8YFLogxK

U2 - 10.1023/A:1005705300959

DO - 10.1023/A:1005705300959

M3 - Article

VL - 36

SP - 223

EP - 237

JO - Biogeochemistry

JF - Biogeochemistry

SN - 0168-2563

IS - 3

ER -